Pulp-refining engine.



I'. W. QUANTZ. PULP REPINING ENGINE.

APPLICATION FILED MAR. 22. 1909.

Patented Sept. 7, 1909.

WIT/VESSES ATTOHIVE V8 of Vincennes, in the -county 'of Knox and UNITED STATES raTENT OFFICE'.

.FREDERIC W. QUAN'r-z, or VINCENNES, INDIANA.

PULP-REFINING ENGINE.

spe'cmca'tion of Lettersratent. Patented Sept. 7, 1909.

:Application ledlMarch 22, 1909. Serial No. 485,061..

To all whom 'it may concern.:

I Se 1t'known that I, FREDERIC lV. QUANTZ, a citizen of the United States, and a resident State of Indiana, have iliade certain new und useful Improvements in Pulp-Refining Engines, of which the following is a specification.

My invention relates to an improved def vice for the reining of paper pulp' and it consists in the constructions, combinations and arrangements herein` described and the other.

blades ypro]acting. beyond the' v-wood strips,

thereby providing parallel grooves or channels. his form ofthe 'device the pulp is forcedinto these'. channels and, owingto the centrifugal action of the revolving plug, part ofthe pulp remains in the' channels and therefore passes .entirely through the re-Y fining device Without being reduced Ato the proper neness. v

The main object fof. myf-invention is to provide animproved shell llingfwhich has the corrugated surface'necessary for the reductionof the pulp, butwhichpbviates the fobjection heretofore mentioned, in -that all of the pulp 1s forced into repeated and intimate contact with ,the revolving plug, thereby rendering' the productv of uniform texture.

My invention is illustrated in the accompanying drawings, in which Figure l is a transverse section through a refining engine, Fig. 2 is an enlarged view in perspective of a portion of the shell, showing the pockets, o'r recessesA and Fig. 3 is a' view showing the development of f a portion-of the shell lining.

In carrying out my invention I make use of the core A which is mounted for rotation vthe inner' edges of the on a central shaft B. On the periphery of' the core'are the radially extending.l blades strips D, the apparatusthus far described constitutin the pluG. A

The she l, in wh1ch` my improvement is embodied, consists of'an outer casing E to which are secured a series ofparallel steel bars or blades' F. Between adjacent bars 'Iarrange the wood strips G. The latter are ofthe same depth as the bars themselves,

bars and the separating strips belng iush. At suitabledistances apart, I provlde recesses in which constitute pockets H when thestrips and bars are assembled. These pockets are clearly shown inFig. 2.

Referring now to Fig 3, it will be seen thatl the blades and the wood strips are bent att 1e row in width as they near the smaller end. It willalso be observed that the wood strip at the smaller front end is solid. 'Thisis to prevent the admission of any large body of foreign substances. l

From the foregoing description of the various parts the operation thereof may be readily understood. As the pulp is caught,

up by the revolving -plug it is carried between the two sets of steel bars and subjected to an abrading action. The centrifugal force of the p the pockets 1n the filling of the shell. The same force, however, drives the pulp out again and into repeated contact with the plug, so that all of the pulp'is brought into repeated engagement with the plug with the the strips G, l

vusual angles and that the' strips nar- C which are separated by means of the wood .Y

plug forces the pulp down into result that nthe product is uniform. With i.

face for the shell but eliminate the channels and hence the tendency of some of the pulp to lodge therein and toescape through said vthis construction I provide a corrugated surchannels without being subjected to the necl essary reduction by the plug. e

This design of shell filling maintains a corrugated surface'until said shell is worn out thereby eliminating the usual expensive method of cutting down .the wood filling to maintain a corrugated .surface in the shell as the steel bars of said shell filling `wear down. b

While I have shown the pockets ,as being of semiecylindrical shape it will be understood that any form of pocket or recess of greater or less size may be used and that thel number of such pockets may be varied without'departing in the least from the spirit and scpe of the invention.

' she i claim; l

1m In a refining en ine, a plu ,Y-a shell therefor, blades carrie by said s ell and a strip having a series of pocketsbetween adjacent blades.

2. In a reinin engine, a plu provided with loiwitudiiia blades, a shel provided with bladbes disposed in angular relation with the axis thereof and a strip having a series of Hockets between adjacent blades of said 3. In a reinino' engine, a plu provided with longitudii'ia blades, a she rovided with a. series of blades, and a strip aving a series of )ockets with curved sides between adjacent lades of said shell.

4. In a refining envine, a plu with outwardly extending radial lades disposed longitudinally thereof, a shell provided with inwardly extending blades disposed in angular relation with the axis provided Y l thereof, and wood strips se i'paratinetlie blades of said shell, each of sai strips in provided with a series of recesses into an out of which the pulp is forced in its travel through the refiner by the centrifugal force of the rapidly revolving plug.

' 5. In a refining en ine,a )lu provided with outwardly exten ing ra ial lades disposed longitudinally thereof,ata erin shell provided with inwardly exten ing lades disposed in angular relation to the axis thereof, wood strips selmratinrirl the blades of 'said shell, each of vsaid strips bein provided with a'series of recesses, the en tions of the strips near the smaller end o the shell being solid to prevent the entrance of foreign substances.

1 FREDERIC W. QUANTZ.

Witnesses:

ALvANis M. Fono, FELIX L. CAvoN. 

